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Controlled synthesis of TiO2 hierarchical nanofibre structures via electrospinning and solvothermal processes : photocatalytic activity for degradation of methylene blue

Ochanda, Fredrick O., Rajukada, Sitarama and Barnett, Matthew R. 2012, Controlled synthesis of TiO2 hierarchical nanofibre structures via electrospinning and solvothermal processes : photocatalytic activity for degradation of methylene blue, Nanomaterials and nanotechnology, vol. 2, pp. 1-10.

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Title Controlled synthesis of TiO2 hierarchical nanofibre structures via electrospinning and solvothermal processes : photocatalytic activity for degradation of methylene blue
Author(s) Ochanda, Fredrick O.
Rajukada, Sitarama
Barnett, Matthew R.
Journal name Nanomaterials and nanotechnology
Volume number 2
Start page 1
End page 10
Total pages 10
Publisher InTech
Place of publication Rijeka, Croatia
Publication date 2012
ISSN 1847-9804
Keyword(s) titanium oxide
hierarchical nanostructures
photocatalysts
electrospinning
Summary The present article describes a new titanium oxide‐based (TiO2) photocatalyst that shows promise for acceleration of dye degradation. A hierarchical TiO2 nanostructure comprising nanorods on‐nanofibres has been prepared using a sol–gel route and electrospinning. Calcination of electrospun nanobre mats was performed in air at 500 °C. The TiO2 nanofibre surface was then exploited as a ‘seeding ground’ to grow TiO2 nanorods by a solvothermal process in NaOH. The nanofibres had a diameter of approximately 100 nm while the nanorods were evenly distributed on the nanofibre surface with a mean diameter of around 50–80 nm. The hierarchical nanostructure showed enhanced photocatalytic activity when compared to pure TiO2 nanofibres. This improved efficiency in degrading methylene blue through the photocatalytic process was attributed to the larger specific surface area of the TiO2 nanostructures, as well as high surface‐to‐volume ratio and higher reactive surface resulting in enhanced surface adsorption and interfacial redox reaction.
Notes Reproduced with the kind permission of the copyright owner.
Language eng
Field of Research 091205 Functional Materials
Socio Economic Objective 961199 Physical and Chemical Conditions of Water not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, InTech
Persistent URL http://hdl.handle.net/10536/DRO/DU:30049590

Document type: Journal Article
Collections: Institute for Frontier Materials
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